Recycle Plastic Bottles to Water Plants

When it comes to summer time and plants drying out, what I find works is taking water bottles (like Perrier water bottles found in the recycle box at work), filling them up with water, and then sticking them in soil about 2-3 inches in the soil. This lasts for about 4 days in containers.

For outdoor garden, I place it close to the plant and it last about 3 days. As the soil drys it allows for air to be released and allowing the water to fill up the spot where the air has been created. No need to worry about overwatering with this method, as gravity works its magic. No need to spend money on glass balls for watering. If you want to decorate them, modpoge them with tissue paper.